Here's another possible meaning

In the US, there is a group of M1icon Garand collectors that acquire M1 rifles, remove perfectly serviceable parts of one manufacture so that they can add parts of another manufacturer such that the rifle appears to be as if it came directly from the factory. That the part they removed was carefully fitted by an properly trained armorer is of no consequence. The term they use is "all correct' and they assign a higher value for it.

I think the proper term for this activity might be 'Forced matched".

Walter
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